Well I don't have a PicassoIV, only a Picassso_2 and a CV-64,
but I tried both CGX_4 and P96 on both and there is a good
reason why I use CGX_4 ....
Slighly more stable, a bit faster on true/high-color-SW,
and easier to setup.
The only prob with the P_4 would be that only P96 supports
the Paloma-add-on, but if you only got the "naked" card
CGX is the way to go.